diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
index 2d78031..c5b9541 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
@@ -38,6 +38,7 @@
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        //ボタンの重ね合わせ
         View view1 = getLayoutInflater().inflate(R.layout.button_layout, null);
         addContentView(view1, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));